题解 | #牛客的课程订单分析(三)#
牛客的课程订单分析(三)
http://www.nowcoder.com/practice/4ae8cff2505f4d7cb68fb0ec7cf80c57
这样比较容易理解!
SELECT * from order_info WHERE user_id in( SELECT user_id from order_info group by user_id HAVING count(*)>=2 ) and `date` > DATE('2025-10-15') and `status` = 'completed' and product_name in( 'C++', 'Java', 'Python' )